Getting Started with an Ars Group DC Project

Back in the day I helped churn out Bitcoins for the Ars group, but that seems to have died out. Back in college, I ran the SETI client.

I've got a fairly new i5 iMac at home doing nothing. What would be the best project to help out with? I would like to join an active Ars group....I would also like it to be something with at least a chance of "working" (so probably not SETI, sorry). Is there a good non-profit project? I have that single computer to help with, and I do fall well below my monthly bandwidth cap if that matters.

Personally, when I compare the different DC projects out there, it's really hard to justify doing much else besides Folding@home for me. Looking for prime numbers just doesn't have the importance that F@H does. Afterall, I am not just donating my boxen, I am also donating about $20.00 extra a month in electriciy. I want that shit to be working for a real cause.

Again, this is my own opinion, and I am sure with regards to P95 there is some sort of "greater good." Whatever it may be, it still pales in comparison to the work F@H does.